Question

PRECISO URGENTE, ME AJUDEM!!!

resolva as seguintes questões: a) x + 5 = 8
b) x - 4 = 3
c) x - 3 = -7
d) 3 x - 4 = 2x + 8
e) 7x - 2 + 4 = 10 + 5x
f) 4. (x+3)= 1
g) 5. (2x - 4) = 7 (x+ 1)- 3​

Answer 1

a) x + 5 = 8

x = 8 - 5

x = 3

b) x - 4 = 3

x = 3 + 4

x = 7

c) x - 3 = -7

x = -7 + 3

x = -4

d) 3x - 4 = 2x + 8

3x - 2x = 8 + 4

x = 12

e) 7x - 2 + 4 = 10 + 5x

7x + 2 = 10 + 5x

7x - 5x = 10 - 2

2x = 8

x = 8/2

x = 4

f) 4 × (x+3) = 1

4x + 12 = 1

4x = 1 - 12

4x = -11

x = - 11/4 = -2,75

g) 5 × (2x - 4) = 7 × (x + 1) - 3

10x - 20 = 7x + 7 - 3

10x - 20 = 7x + 4

10x - 7x = 4 + 20

3x = 24

x = 24/3

x = 8

Answer 2

Resposta:

a) X= 3

b) X= 7

c) X= -4

d) X= 12

e) X=4

f) X= 2.75

g) X=8

Explicação passo-a-passo:

espero ter ajudado :)